1. Having very keen vision
   "quick-sighted as a cat"
   - argus-eyed, hawk-eyed, keen-sighted, lynx-eyed, sharp-eyed, sharp-sighted 
2. Keenly perceptive or alert
   "quick-sighted into the faults of the time"
   - sharp-sighted, sharp-eyed

See also: perceptive, sighted

• antifungal agent
• antigen
• antigenic
• antigenic determinant
• Antigone
• Antigonia
• Antigonids
• Antigonus
• Antigonus Cyclops
• antigram
• Antigua
• Antigua and Barbuda
• Antiguan
• antihaemophilic factor
• antihaemophilic globulin
• antihemophilic factor
• antihemophilic globulin
• antihemorrhagic factor
• antiheretical
• antihero
• antihistamine
• antihypertensive
• antihypertensive drug
• antiknock
• antiknocking